1

Rail System &

BUIS

Standard

configuration

Back up

Iron SightForward

Rails

Tactical

Sling

2000

M4 Carbine

2001

1991

2007

M4 Carbine Improvements

ImprovedBolt

& Extractor Spring

Improved Magazine

Design Approved

(Fielding JUL 2009)

Required Reliability

MRBS – 600

MRBF – 3,8002006

Baseline

Reliability Test

Demonstrated

MRBS – 3,592

MRBF – 6,076

Improved Adapter Rail

(prevents improper

install)

SOCOM M4A1Introduced w/ 5 Major

Improvements

Advanced

Combat Optic

& Enhanced

Stock

Total: 62 ECPs to M4Improved

Feed

Ramps

19961997

1995

Improved

Extractor

Spring

PM Soldier Weapons’ Continuous Improvement Process

M68CCO

M150, Rifle Combat Optic

(RCO)

PEQ/2

Forward

Grip/Bipod

Improved

Weapons

Cleaning Kit

Squad Designated Marksman

Bipod

Multi Magazine Holder with Pouch

1998

2009

RFI Fielded TA31F RCO-M4 Combat Optic

(RCO)

2005

Improved

Butt stock2003

Picatinny Rail

& Pistol

Grip TC

Obtain Government

Purpose

Rights to

Compete TDP

2008